Home / 830,100.40-1,245,150.60-269,134.90

Finding the Fourth Proportional to 830,100.40, 1,245,150.60 and 269,134.90

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Solution

The fourth proportional to 830,100.40, 1,245,150.60 and 269,134.90 is: 403,702.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,100.40 : 1,245,150.60 = 269,134.90 : x
  2. Step 2: Convert to fraction form
    830,100.40/1,245,150.60 = 269,134.90/x
  3. Step 3: Cross multiply
    830,100.40x = 1,245,150.60 × 269,134.90
  4. Step 4: Simplify right side
    830,100.40x = 335,113,482,215.94
  5. Step 5: Solve for x
    x = 335,113,482,215.94/830,100.40
  6. Step 6: Final answer
    x = 403,702.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.